[gentoo-user] lzma-utils vs xz-utils

[gentoo-user] lzma-utils vs xz-utils

[Philip Webb]

Planning to 'emerge -pv eix' for the latest 0.17.1 in testing,
I was surprised by 

  Calculating dependencies... done!
  [ebuild  N    ] app-arch/xz-utils-4.999.9_beta  1,014 kB
  [uninstall    ] app-arch/lzma-utils-4.32.7  USE="-nocxx" 
  [blocks b     ] app-arch/lzma-utils ("app-arch/lzma-utils" is blocking app-arch/xz-utils-4.999.9_beta)
  [blocks b     ] app-arch/xz-utils ("app-arch/xz-utils" is blocking app-arch/lzma-utils-4.32.7)
  [ebuild     U ] app-portage/eix-0.17.1 [0.17.0] USE="bzip2%* -deprecated -doc -nls sqlite -tools" 470 kB

I understand the "blocks" lines, but am uneasy about uninstalling Lzma-utils,
which seems to have many important dependencies:

  root:503 ~> equery d lzma-utils
  [ Searching for packages depending on lzma-utils... ]
  app-arch/rpm2targz-9.0.0.3g (app-arch/lzma-utils)
  app-portage/eix-0.17.0 (app-arch/lzma-utils)
  dev-libs/mpfr-2.4.1_p1 (app-arch/lzma-utils)
  media-libs/libpng-1.2.38 (app-arch/lzma-utils)
  media-libs/netpbm-10.46.00 (app-arch/lzma-utils)
  net-misc/netkit-rsh-0.17-r9 (app-arch/lzma-utils)
  sys-apps/coreutils-7.4 (app-arch/lzma-utils)
  sys-apps/man-1.6f-r3 (lzma? app-arch/lzma-utils)
  sys-apps/net-tools-1.60_p20071202044231-r1 (app-arch/lzma-utils)
  sys-apps/sandbox-2.0 (app-arch/lzma-utils)
  sys-apps/texinfo-4.13 (app-arch/lzma-utils)
  sys-devel/m4-1.4.12 (app-arch/lzma-utils)
  sys-kernel/linux-headers-2.6.27-r2 (app-arch/lzma-utils)
  sys-libs/gpm-1.20.5 (app-arch/lzma-utils)

Can anyone explain what's going on ?

-- 
========================,,============================================
SUPPORT     ___________//___,   Philip Webb
ELECTRIC   /] [] [] [] [] []|   Cities Centre, University of Toronto
TRANSIT    `-O----------O---'   purslowatchassdotutorontodotca

Re: [gentoo-user] lzma-utils vs xz-utils

[Dirk Heinrichs]

Am Sonntag 13 September 2009 10:35:44 schrieb Philip Webb:
> I understand the "blocks" lines, but am uneasy about uninstalling
>  Lzma-utils, which seems to have many important dependencies:

Just do it. xz-utils is a drop in replacement.

Bye...

	Dirk

Re: [gentoo-user] lzma-utils vs xz-utils

[Paul Hartman]

On Sun, Sep 13, 2009 at 3:35 AM, Philip Webb <purslow@ca.inter.net> wrote:
> Planning to 'emerge -pv eix' for the latest 0.17.1 in testing,
> I was surprised by
>
>  Calculating dependencies... done!
>  [ebuild  N    ] app-arch/xz-utils-4.999.9_beta  1,014 kB
>  [uninstall    ] app-arch/lzma-utils-4.32.7  USE="-nocxx"
>  [blocks b     ] app-arch/lzma-utils ("app-arch/lzma-utils" is blocking app-arch/xz-utils-4.999.9_beta)
>  [blocks b     ] app-arch/xz-utils ("app-arch/xz-utils" is blocking app-arch/lzma-utils-4.32.7)
>  [ebuild     U ] app-portage/eix-0.17.1 [0.17.0] USE="bzip2%* -deprecated -doc -nls sqlite -tools" 470 kB
>
> I understand the "blocks" lines, but am uneasy about uninstalling Lzma-utils,
> which seems to have many important dependencies:

xz-utils replaced lzma-utils. According to lzma-utils website
(http://tukaani.org/lzma/):

"LZMA Utils are legacy data compression software with high compression
ratio. LZMA Utils are no longer developed, although critical bugs may
be fixed as long as fixing them doesn't require huge changes to the
code.

Users of LZMA Utils should move to XZ Utils. XZ Utils support the
legacy .lzma format used by LZMA Utils, and can also emulate the
command line tools of LZMA Utils. This should make transition from
LZMA Utils to XZ Utils relatively easy. "